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0.0165×12.5-1.65×0.025的简便计算
人气:290 ℃ 时间:2020-04-02 07:51:46
解答
0.0165x12.5-1.65x0.025
=1.65x0.125-1.65x0.025
=1.65x(0.125-0.025)
=1.65x0.1
=0.165
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